Phosphoric acid, also known as orthophosphoric acid or phosphoric(V) acid, is a mineral acid commonly used in various industrial processes. It is commonly used as a food additive, in detergents, and as a rust inhibitor. Phosphoric acid is also used in the production of fertilizers, metal treatments, and water treatment.
When rubber is exposed to phosphoric acid, the acid can cause swelling and softening of the rubber. This can lead to cracking and breakdown of the rubber material over time. Additionally, when used in combination with other chemicals, phosphoric acid can cause accelerated degradation of the rubber. The rubber may also become brittle and crack prematurely.
Viton ® o-rings from Marco Rubber offer excellent compatibility with a range of chemicals, oils and resist high temperatures up to 400F. Viton ® is also known as FKM made of fluoroelastomer one of the most versatile and widely used sealing materials.
View some of our other material compatibility ratings with PHOSPHORIC ACID, 80%. If you don't see what you're looking for or need more guidance, our team of experienced sealing design engineers can help select the best sealing products and material for your specific application.View Full Chemical Compatibility Guide